Main Idea: Bouldering is a sport involving a person who climbs a small rock formation or wall without harnesses or ropes, Supporting Detail: The height of a rock formation is 20 feet or less., Even though most don't use harnesses or ropes, they do wear climbing shoes to help with foot holds, In addition, boulder climbers make chalk their hands to keep them dry and to hold with firm grip holds., Also, some boulder sportsmen use boulder mats at the base of where they climb in case they fall., A traverse occurs when a climber must move horizontally across a rock., The sport was originally designed so that climbers could get practice in specific techniques at safer distances before tackling larger rock formations., Bouldering is meant to strengthen finger grip and build stamina.,

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